Respuesta :

Medunno13

Answer: [tex]26^{\circ}[/tex]

Step-by-step explanation:

By the alternate exterior angles theorem,

[tex]3x+5=5x-9\\\\5=2x-9\\\\2x=14\\\\x=7[/tex]

This means that [tex]m\angle B=5(7)-9=\boxed{26^{\circ}}[/tex]